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Jonathan C Fox

CIK 1655016 · See Remarks · last filed 2026-07-01

Jonathan C Fox is a corporate insider who has filed 40 SEC Form 4 insider transactions across 3 companies since 2015. The most recent filing, for EWTX, was dated Jul 1, 2026. Across all open-market trades the lifetime net is −$6.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$1.08M

Companies

3

Total Filings

40

Lifetime Open-Market Net

-$6.95M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
EWTX Director 24,833 $43.52 $1.08M $300.4K 13 2026-07-01
Eidos Therapeutics, Inc. (EIDX) Delisted See Remarks 380,967 — — -$7.28M 24 2020-09-18
MyoKardia, Inc. (MYOK) Delisted Chief Medical Officer 240,997 — — $30.0K 2 2016-05-06

Recent Filings

40 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-07-01 EWTX Grant (A) +319 $0 EDGAR
2026-06-16 EWTX Grant (A) — $0 EDGAR
2026-04-03 EWTX Grant (A) +339 $0 EDGAR
2026-01-05 EWTX Grant (A) +473 $0 EDGAR
2025-11-13 EWTX Buy (P) +10,700 $199.4K EDGAR
2025-10-02 EWTX Grant (A) +728 $0 EDGAR
2025-07-02 EWTX Grant (A) +858 $0 EDGAR
2025-06-18 EWTX Grant (A) — $0 EDGAR
2025-04-03 EWTX Grant (A) +559 $0 EDGAR
2024-06-12 EWTX Grant (A) — $0 EDGAR
Showing 1–10 of 40
Page 1 of 4
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.